Text compare features
Large file support for comparison of files several GB large
(Note: UltraCompare does include a memory threshold limitation so as not to consume all of the free RAM on your system. This threshold is based upon a variety of factors but ultimately is determined by the amount of memory required to complete the compare versus the amount of free memory on your system.)
Powerful three way text file compare
Windows explorer shell integration (right click menu in Windows Explorer) (not yet available for 64-bit systems)
Ability to edit text lines and merge within UltraCompare
Changes can either be saved or merged to other file
Changed lines are highlighted until they are saved
Download webpage or web file for text compare by typing its URL into the file address bar
Manually re-sync two lines and begin the compare from those chosen lines
Copy/paste multiple selected contiguous lines to clipboard
Copy compare frame to clipboard
Ability to compare whitespace differences between text files (tabs and spaces)
Inline editing of text files

Full Unicode support
Load files with Unicode file paths/names
Display and diff Unicode/UTF-8 data
Set tab value to a specific number of spaces (like UltraEdit/UEStudio)
Compare column ranges of data
Set column range(s) to be compared
Set column range(s) to be ignored
Ability to compare text snippets, including ability to:
Paste text into blank compare frames
Clear compare frames (temp files are automatically deleted)
Merge and save compare results as a separate file
Bookmark support
Ability to delete lines from file
Line-by-line compare of individual text files
Status bar shows number of lines/blocks with differences
Dockable “Legend & Filters” pane provides quick reference to compare symbols and colors, plus quick access to compare filters
Dockable output window with difference summary (cut/copy/paste output)
Compare difference summary includes:
data in source but not in destination file (or vice versa)
character differences between files on the same line

Launch folder compare or text compare from command line
Ignore options:
Ignore case
Ignore spaces
Ignore blank lines
Line terminator differences
Lines which begin with: <character or string>
Lines which contain: <character or string>
Lines which end with: <character or string>
A defined number of lines at the beginning of file
A defined number of lines at the end of file
EBCDIC compare supported
Double-byte compare supported
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Folder compare features
2-way folder compare
Threaded compare engine for quick handling of large directories
Intuitive tree-style view
Includes open/close nodes for subdirectories
Double-click a compared file or folder to launch a new compare in a new session
Compare three folders at at time
Mark and hide or unhide files and folders
Compare remote (FTP/SFTP/FTPS) folder to local or remote folder
CRC support for FTP compares (avoid downloading files to compare them)
Compressed archive compare
ZIP file compare
ZIP file password support
RAR file compare
Java JAR file compare
Side-by-side directory compare presentation
Windows explorer shell integration (right click menu in Windows Explorer) (not yet available for 64-bit systems)
Switch comparison method on the fly (basic, full, or smart [includes text compare])
Dockable preview pane to preview text content of files
Dockable “Legend & Filters” pane provides quick reference to compare symbols and colors, plus quick access to compare filters
Compare files based on time, date, or size
Optionally ignore user-specified directories and file types
Optionally ignore file timestamp differences
Full Unicode support – compare folders from Unicode paths
Ability to customize display of file date/time format in folder compare
Set a NOT operator for filter (ie, NOT *.bak, etc.)
Provide live update on progress (useful when working with large nested directory trees)
Favorite files and folders allow quick access to commonly used compare items
Explore source or destination directory by right clicking in folder compare mode
Compare individual directories
Recursive compare of directories (includes subdirectories)
Difference summary includes:
same named files with different sizes
same named files with different creation dates/times
file type: binary or ascii
option to automatically display immediately following directory compare
Select files with different names in folder compare mode and compare them
Right-click on column headings and select fields
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Merge features
Undo merge
Merge compared lines/blocks between files for two and three way text compare
Merge compared files between directories for two and three way folder compare
Selected line merge capability
Accept all (or merge all) button for text mode, and folder mode
Word-level (or selection-level) replacement and insertion
Mark merged lines for review
Enhanced merging – allows changes to be added to changes in other file
Merge contents of compared directories
Automatically move to the first difference when loading
Automatically move to next difference after merge

Print/output features
Print compare results in color
Ability to use UltraCompare in batch files to produce reports, side-by-side difference output
Print right or left compared file from File menu
Print compare difference summary showing matching lines or differences only
Print and save differences in context
Print and save differences of one file
Print and save files side by side
Print and save differences from binary compare
User configurable report headers/footers

File management features
FTP support
Open left/right compare file independently
Drag and drop files to compare frame from Windows explorer
Close All in the file menu and as a button
Automatic file change detection

Display features
Integrated IE browser support – display and compare HTML files as they would appear in the browser
Show file in browser
Full theme support
Manage Themes dialog for creating and modifying themes:
Skin the entire application (dockable panes, menus, toolbars, file tabs, status bar, etc.)
Set compare colors for text, folder, and binary mode
Switch themes with a single click
Use one of several pre-defined themes or create your own
Import, export, and share your themes with others
Text relational lines mode
Full width display of active line of each compared file at bottom of application
Ability to word wrap compare files
Graphical scrolling display to easily locate changes
Synchronized horizontal scrolling
Flip comparison frames to switch source/destination files/directories
Toolbar customization
Display line number and column number in the status bar